STMicroelectronics, 4-ChannelAudio49W, 48-Pin LQFP48L HFA80A-F2Y

The STMicroelectronics HFA80A is a new STMicroelectronics class-D audio amplifier, specifically designed for automotive applications in BCD9s technology. The HFA80A integrates advanced solutions for an excellent radiated noise immunity combined with the advantages of 2 MHz switching PWM class-D output stages. This configuration allows outstanding audio performances while designing a compact and inexpensive application. The HFA80A supports wide band applications with extremely low level of noise and low THD. Moreover, it features a broad diagnostics matrix able to support the most demanding OEM requirements in terms of speaker control and system robustness/reliability. The HFA80A supports start/stop cranking down to 4.5 V and is housed in a very compact and thin LQFP 7x7 package, making it suitable for any level of automotive application.

Supply operating range 4.5 V to 18 V
Battery load dump compatible upto 40 V
Reduced size and cost of output LC thanks to 2 MHz switching PWM
Multiple load configurations
MOSFET power outputs allowing high output power capability
Fast turn-on and very low latency for high-speed audio processing applications
Full diagnostic matrix with info available both on I2C and CD or DIAG pin
Independent by channel DC and AC load detection diagnostic with selectable threshold
Startup diagnostic for shorts to VCC or GND
Overcurrent protection with configurable threshold
Thermal protection and thermal warning